Process and apparatus for molding or casting.



G. ATTERBURY. PROCESS AND APPARATUS FOR MOLDING OR CASTING. APPLIOARMN FILED MAY 18.1908.

965,150. Patented July 26, 1910.

a BHEETB-SHEET 1.

G. ATTERBURY.

APPLICATION FILED In 1a, 1908.

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G. ATTERBURY. PROCESS AND APPARATUS FOR MOLDINGOR CASTING.

V A PPLIOATION FILED MAY 18 1908.

Patented July 26, 1910.

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GROSVENOR ATTERBURY, OF NEW YORK, N. Y.

PROGESQ AND APPARATUS FOR MOLDING 0R CASTING.

Specification of Letters Patent.

Patented July 26, 1910.

Application filed May 18,1908. Serial' No. 433,539.

My invention relates to that class of molding processes and apparatus in which: a body or block is cast with central holes or openings, which; holes or openings are formed by means of suitable cores, which are withdrawn while the material of which the block is cast is plastic, and its place taken by sand or other anular material, which maintainsthe plastic material in posi'-- tion after the withdrawal of the cores. Hereto-fore, in the operation of such machines or apparatus, difiiculty has been en-- countered in the withdrawal of the cores, owing to the friction existin between the cores and the plastic materia and with the J granular material or sand inserted when the cores are withdrawn.- v One object of my invention isto provide an ap aratus'a-ndprocess which overcomes culty' above-mentioned, and bywhich bodies or blocks may be cast of any desired lengthcontinuousl y and in one operation.

A further object of my invention is to provide an apparatus and process in which bodies or blocks may be 'cast of severa different materials, such as of concrete and of facing material for the blocks. A further object of my invention is to provide an apparatus and process in which the plastic material used iscom actly and homogeneously packed in position within the molds, thereby producing homogeneous body .or block.

This invention is an improvement on-EH13 apparatus and process set forth inamy prior Patent No. 828,833, issued August 14, 1906. Briefly stated, my invention com rises the process of formin the blocks or "odies by feeding the mater als of which. the same are to be made, evenly and continuously durin' a definite period, sufiicient to form a bloc of the length required, during the withdrawal of separating partitions or cores, and preferably at the same time, inserting. the granular material or sand which holds; the plastic material in position. Such feeding may be accomplished; at approximately in Processes and Apparatus for the same rate at which the plastic material or materials are inserted to form the block -orthegranular material may be inserted partly or wholly beforehand. The feedin ration iscarried on in conjunction wit t e operation of jarring or shaking the mold and the'materials contained therein, so that such materials are firmly settled or'packed in sition; 1

. ,urther features, advantages and objects of my invention will be apparent from the jfollowing specificationan t the accompany- Idrawings forming a part thereof, in j w c'"--' I Figure 1. is an elevation of one form of iapparatusiffor vcarrying out my improved process, and-which'I at present deem preferable, the mold or c asing thereof and its supports being shown in vertical section; Fig. 2 is a vertical sectional view of the Qsame taken substantially on the line A-A,

Fi 1"; Figs. fiend 4 are, respectively, longiitu inal and} transverse sectional views of gcontained]therein .;-,F g. 5- is. f horizontal gsection'a'l view -taken 'substantlally on the line B,-B, Fig- 3; Figs. 6 and 7 are vertical 1 sectional views, taken {substantially on the lines and 'D-D, respectively, of Fig. 5-; Fig.- 8 is a vertical sectional v ew taken substantially onthe line C-C, Fig. 5, but

showin the cores :in a raised position; and

Fig. 9 18-8 horizontal sectional view taken substantially on the line E-E, Fig. 1.

the lowerportionoft he mold and the parts Referring .tothe drawingsnthe numeral 1 I indicates vertical supports or beams formi119; a part of the/frame for holding the coresand: hoppers cooperating therewith in position; These are connected at their. up-

per endsby horizontal beams 2, between which the hopper 3 is placed for feeding the sand to the partitionsclosed upon themselves forming central tubes or cores 4. The sides of the hopper 3 are preferably adjustable so as to be accommodated}. to cores of different numbers and widths. Between the upper-and lower ends of the sup.- ports t is placed a horizontal platform or frame 5, composed of parallel beams6, be-

tween which the upper end of, the casing 7 of the mold is located and retained definitely in position. are located one or. more hoppers, 8 and 9, the hopper 8 being adapted to contain'the material which is to be supplied to one part of the mold, such as the surfacing material,

Upon the platform 5 llO ' is provided with suitable guide rollers 12 The partitions that are closed upon themselves so as to form cores 4, for casting or forming the openings in the blocks or bodies being manufactured, preferably consist of a series of telescoping sections 10, the lower or outer section 11 of which is made according to the size and shape of the openings to be formed in the blocks. The section 11 which contact with the inner surfaces 0 the casing 7 and retain the said section of the core accurately in position within the mold. To the section 11 of the core are attached suitable means for withdrawing the same, such as cables or cords 13, passing over pulleys 14 to any suitable source of power (not shown). The upper ends of the lower section 11 of the cores are preferably connected to a single head or frame 15,'which holds said sections in their correct relative positions. The lower sectionsll of the cores 4 carry vertical divisional strips or plates 16, which are off-set at their lower ends as indicated at 17. These parts 16- and 17 form separators between the two kinds of material of which the block is to be formed, the off-set portion 17 being located relative to the inner surface of the casing so as to form a layer of the surfacing material of the requisite. thickness on the outer surfaces of the block. .The' division plates or strips 16 are continued upward along and between the cores 4,.preferably in the form of telescoping or overlapping sections 18, and form separating partitions from the bottom of the mold to the top of the mold adjacent their hoppers, so that the two materials may be inserted through the respective hoppers and will be maintained apart until they reach the lower end of the lower sections 11 of the cores. The overlapping sectims 1801' the division plates will, therefore, slide upon each other as the lower section of the core is raised, and will, consequently, prevent the two materials from coming in contact with each other at all times. I may use other forms of dividing strips or partitions, such as flexible strips adapted to be rolled on a drum or roller like a curtain or shade roller... The separat-' ing strips 18 areguided. in suitable grooves 19 in the surfaces of the adjacent core sections 10, and are thereby preventedfrommoving laterally. The bottom of the casing or mold 7 is provided with conical or pyramidal projections 20, which enter the lower ends of the sections 11 of the cores and center the same, so that the walls of the blocks or bodies being cast will be of uniform,thickness at that point.

In view of the fact that it is desirable to have the lower end of the mold or casing 7 located accurately with regard to. the upper end thereof, I provide means for fixing the same upon the movablelbase. prise a plate 21 fastened to the bottom of These comthe mold, having ends projecting beyond the sides thereof. This plate is provlded with forced upward by pressure, as at 25, and

this motion causes the pins to enter the corresponding holes in the plates, thereby accurately locating the plate 21 and the mold to which it is attached.

The base upon which the mold rests, as

above mentioned, is vertically movable, and

is given a jolting or shaking motion for settling or packing the materials within the mold into position. This may be accomplished b any suitable means, but I have illustrate for example, the mechanism shown in Fig. l. The base or platform 26 is (mounted, upon two or more airs of jointed links 27 andv 28. To the inks 28 are attached levers 29, the inner ends of which rest upon a wheel or hub 30, provided with projecting pins 31, forming cams. The wheel 30 is mounted upon a suitable shaft, and is turned by any suitable mechanism, such as through the pulleys 32 and 33 and. the belt 34. The platform 5 rests upon adjustable supports 35, which may be raised or lowered accordi to the length of the mold used. This p atform is also connected with suitable cables orchains 36, the opposite ends of which are attached to the cables 13, as at 37 These lifting chains or cables 36 are of such a len h that when the coresare at the bottom 0 ,the mold, at the beginning of the casting process, there is a considerable slack .in the said cables, and the amount of this slack de Jends upon the distance which the lower on moves before the slack is taken up, as the connecting slack in the cables 36 being taken up, the

frame 5 will then also move upward, and will carry with them the hoppers 7 and 8, supported on the beams 6, leaving the molds 7- disengaged from such-parts and from the cores. The molds 7 may then be removed and an empty mold placed in positlon for the next castmg operation.

'in which the different sizes and shapes of blocks are to be cast or molded.

If it is desired to reinforce the blocks with iron rods, suchrods may be placed in the mold, as indicated at 38, their lower ends resting in sockets 39, formed in the mold, or on the bottom, or suspended so as to leave a space beneath their lower ends, and to hold the rods in position intermediate their ends during the casting process, I provide guides 40, attached to the section 11 of the cores. These guides are in the form of. eyes,

through which the rods pass, and it will be v seen that-if the ends of the core move up ward, these uides will serve to accurately locate the re s within the cement, while the latter is being introduced, and at the same time serve to guide the cores. When the cores are completely withdrawn, the rod is allowed to remain in the cement or similar material, and thereby form reinforcing means. It is obvious that the rods )may be located at any desired points in the block.

Having described this form of my improved apparatus, the process of castingihe )lock' is carried out as follows: The mold 7 having been placed in position upon the movable base 21, the cores 4 are lowered into the mold; sand, cementand facing materialare then su plied respectively to the hoppers 3, 9 an 8, and preferably in such qua-n tities that they will fill-the respective portions .of the mold into which they are introduced at a uniform rate, in other words, so

' that the facing material, the cement, and,

also, if desired, the sand will always be at substantially the same height in the mold.

When these'materials have reached a certain height in the mold, say a foot, moreor less, above the bottom of the lower section 11, the cores are moved upwardly, and this movement takes place at the same rate at which the mold is filled with thematerials of which the block is being cast, and also, if desired, at the same rate that the sand is supplied. During the filling of the mold, the mechanism which causes the jolting or shaking of the platform 1.2,is also put in motion, thereby settling the cement firmly and homogeneously in position, preventing air holes and other weak spots, and also permitting the cores and partitions tobe withdrawn more easily. It will be seen that as the lower section 11 of the cores 4 are.

withdrawn, only a portion of said section is surrounded by the plastic material and the sand, and since there is slight friction between said section of the core and these materials, thereis no difliculty in lifting the cores, andthe material quickly flows into the space previously occupied by the walls of the cores and the division plates and thereby prevents any space being left between the materials. It will also be seen that as the core is withdrawn, the sand remains in the space previously occupied by the core and preserves the shape of the hole or opening until the material has become set or hardened. When the material is completely set or hardened, the casing of the .mold is removed from the block and the sand allowed to flow from the holes or openings, the casting process. being then complete. 1 2

Having thus described this form of 'my invention, I.do not wish to be understood as being limited to the exact arrangement of parts and details of construction set forth, for various changes may be made by those skilled. in the art without departing from the spirit and scope of my invention.

What I claim and desire to protect by Letters Patent is: t

1. The process of molding hollow bodies, com rising, progressively forming a body of p astic material, simultaneously shaping an opening in said accumulating body of plastic material, and simultaneously supplying and shaping granular material to l and distend said opening immediately after the same is formed, said plastic material and granular material being supplied at the same rate as the progressive shaping ,of said opening and contacting with each other immediately. after, and at the same rate as, said forming.

2. The process of molding hollow bodies, comprising progressively shaping openings in an accumulating body of'plastic material, supplying granular material to said open ings after the same are formed, and jarring or shaking said accumulating materials.

3. The process 'of molding cementitious and similar bodies, comprising, progressively forming vertically separated sectionsv of plastic materials by supplying said materials constantly and at the same rate, and then causing said sections toprogressively contact with each other immediately after, and at the same rate as, said forming.

4. The process of molding cementitious and similar bodies, comprising, progressively forming vertically separated sections of plastic material, by supplying said material constantly and at the same rate to each section, simultaneously shaping openin s in said plastic material, supplying and 01min'g granular material to fill and distend said openings immediately after the same -are formed and then causing said sections material and outside sections of a facing material by supplying said materials con- 6. An apparatus for molding cemenlitious bodies, comprising a suitable mold, verii cally movab 'epartitions within said mold,

vertically disposed reinforcing guide-rods in said mold, and means connecting said rods and said vertically movable partitions, adapted to prevent lateral movement of the latter, substantially as described. 7. In an apparatus formolding cementitious bodies, a mold-box, a vertical 'core in said box, means for simultaneously supplying cementitious material around said core and granular material in said core and for graduallywithdrawing said core from the box as the material is supplied, substantially as described. p

8. An-apparatus for molding cementitious bodies, comprising, a suitable mold, vertically movable partitions within said mold, means for raising said partitions atthe rate at which the CBIHBIltltlOllSdllfltQlltll is supplied and means for jarring said mold durng the raising ofsaid partitions. 9. An apparatus for molding cementitious bodies, comprising, a suitable mold, vertical telescoping cores within said mold, and

means 'for raising the lower sections of said cores at the rate at which the cementitious material is supplied. a

10. An apparatus for molding cementitious bodies, comprising, "a suitable mold, tubular telescoping cores within said mold, means for raising the lower sections of said cores at the rate at which the cementitious material. is supplied and means for jarring said mold during the raising of said sections. I 11. An apparatus for molding cementitious bodies, com rising, a suitable mold, vertical cores within said mold, means for. supplying" granular material to said cores, means for supplying cementitious material between said cores and said mold, and means for continuously and uniformly raising the lower ends of said cores at the rate at which said materialsare supplied to saidcores and mold.

12'. An apparatus for molding cementitious bodies, comprising, a suitable, mold,

63) movable tubular cores within said.m old, l

movable partitions within said ,mold and cooperating with said cor'es,'means 'for supplying cement-itious material at thesides of Said partitions, means for supplying granular material to said cores, and means for raising the lower ends of saidcores and said partitions at the rate at'which said matemold when the 'same'is filled.

11. The process of forming hollow bodies in a casting mold which coin'prisespouring a mobile material into a hollow core, and pouring a.pl'astic material around said core, and in w thdrawing said core simultaneously with and at the same rate as the mo-' bile material and plastic material are supplied to said mold.

15. The process of forming hollow bodies in acasting mold which com rises pouring a granular material into a .ho low core, and. pouring a plastic material around said core, and in withdrawing said core [simultaneously with and atthe same rateas the granular material and plastic material are'sup plied to sa'id'mold.

16. The process of molding bodies in-a casting mold which comprises pouring a plastic material in the mold and on oneside of a p'artitionand pouring aplastic material of a difi'erentgrade into the mold and on the other side of a partition, and'in with drawing said partition'simultaneously with and at the same rate as the plastic materials p are supplied to said mold.

17. In an apparatus for molding hollow plastic bodies comprisin a suitable mold, a hollow core in'said mo (1, means for supplying granular-material into saidcore, 11-?0 means for sup lying plastic material around said core, an means for raising said core at the same rate that the granular material is-supplied into the core and the plastic material around said core.

Signed this 6th dayof May, 1908.

GROSVENOR ATTERBURY. lVitnessesz' ALBERT E. WILsoN, CHAR ES C. MAY. 

